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POScrapy: MySQL Pipeline -- Unexpected Errors Encountered
 

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  1. POScrapy: MySQL Pipeline -- Unexpected Errors Encountered
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    <p>I'm getting a number of errors, depending upon what is being inserted/updated.</p> <p>Here is the code for processing the item:</p> <pre><code> def process_item(self, item, spider): try: if 'producer' in item: self.cursor.execute("""INSERT INTO Producers (title, producer) VALUES (%s, %s)""", (item['title'], item['producer'])) elif 'actor' in item: self.cursor.execute("""INSERT INTO Actors (title, actor) VALUES (%s, %s)""", (item['title'], item['actor'])) elif 'director' in item: self.cursor.execute("""INSERT INTO Directors (title, director) VALUES (%s, %s)""", (item['title'], item['director'])) else: self.cursor.execute("""UPDATE example_movie SET distributor=%S, rating=%s, genre=%s, budget=%s WHERE title=%s""", (item['distributor'], item['rating'], item['genre'], item['budget'], item['title'])) self.conn.commit() except MySQLdb.Error, e: print "Error %d: %s" % (e.args[0], e.args[1]) return item </code></pre> <p>Here is an example of the <code>items</code> returned from the scraper:</p> <pre><code> [{'budget': [u'N/A'], 'distributor': [u'Lorimar'], 'genre': [u'Action'], 'rating': [u'R'],'title': [u'Action Jackson']}, {'actor': u'Craig T. Nelson', 'title': [u'Action Jackson']}, {'actor': u'Sharon Stone', 'title': [u'Action Jackson']}, {'actor': u'Carl Weathers', 'title': [u'Action Jackson']}, {'producer': u'Joel Silver', 'title': [u'Action Jackson']}, {'director': u'Craig R. Baxley', 'title': [u'Action Jackson']}] </code></pre> <p>Here are the errors returned:</p> <pre><code> 2013-08-25 23:04:57-0500 [ActorSpider] ERROR: Error processing {'budget': [u'N/A'], 'distributor': [u'Lorimar'], 'genre': [u'Action'], 'rating': [u'R'], 'title': [u'Action Jackson']} Traceback (most recent call last): File "/Library/Python/2.7/site-packages/scrapy/middleware.py", line 62, in _process_chain return process_chain(self.methods[methodname], obj, *args) File "/Library/Python/2.7/site-packages/scrapy/utils/defer.py", line 65, in process_chain d.callback(input) File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/twisted/internet/defer.py", line 361, in callback self._startRunCallbacks(result) File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/twisted/internet/defer.py", line 455, in _startRunCallbacks self._runCallbacks() --- &lt;exception caught here&gt; --- File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/twisted/internet/defer.py", line 542, in _runCallbacks current.result = callback(current.result, *args, **kw) File "/Users/fortylashes/Documents/Management_Work/BoxOfficeMojo/BoxOfficeMojo/pipelines.py", line 53, in process_item self.cursor.execute("""UPDATE example_movie SET distributor=%S, rating=%s, genre=%s, budget=%s WHERE title=%s""", (item['distributor'], item['rating'], item['genre'], item['budget'], item['title'])) File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/MySQLdb/cursors.py", line 159, in execute query = query % db.literal(args) exceptions.ValueError: unsupported format character 'S' (0x53) at index 38 Error 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '), 'Craig T. Nelson')' at line 1 2013-08-25 23:04:57-0500 [ActorSpider] DEBUG: Scraped from &lt;200 http://www.boxofficemojo.com/movies/?id=actionjackson.htm&gt; {'actor': u'Craig T. Nelson', 'title': [u'Action Jackson']} Error 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '), 'Sharon Stone')' at line 1 2013-08-25 23:04:57-0500 [ActorSpider] DEBUG: Scraped from &lt;200 http://www.boxofficemojo.com/movies/?id=actionjackson.htm&gt; {'actor': u'Sharon Stone', 'title': [u'Action Jackson']} Error 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '), 'Carl Weathers')' at line 1 2013-08-25 23:04:57-0500 [ActorSpider] DEBUG: Scraped from &lt;200 http://www.boxofficemojo.com/movies/?id=actionjackson.htm&gt; {'actor': u'Carl Weathers', 'title': [u'Action Jackson']} Error 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '), 'Joel Silver')' at line 1 2013-08-25 23:04:57-0500 [ActorSpider] DEBUG: Scraped from &lt;200 http://www.boxofficemojo.com/movies/?id=actionjackson.htm&gt; {'producer': u'Joel Silver', 'title': [u'Action Jackson']} Error 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '), 'Craig R. Baxley')' at line 1 2013-08-25 23:04:57-0500 [ActorSpider] DEBUG: Scraped from &lt;200 http://www.boxofficemojo.com/movies/?id=actionjackson.htm&gt; {'director': u'Craig R. Baxley', 'title': [u'Action Jackson']} </code></pre> <p>Apparently there are a lot issues. Thank you for reading! Any and all suggestions or ideas are greatly appreciated!</p> <p>::::UPDATE/MORE INFO::::</p> <p>There appear to be three movies, of the test set of 52 total, which are being inserted into the the <code>Actors</code>, <code>Producers</code> and <code>Directors</code> tables. <strong>Note</strong>: The <code>UPDATE</code> statement isn't working at all.</p> <p>These movies are: <code>Abraham Lincoln: Vampire Hunter</code>, <code>Ace Ventura: Pet Detective</code> and <code>Ace Ventura: When Nature Calls</code></p> <p>Interestingly, these are all of the movies that have <code>:</code> in the <code>title</code>- I'm not sure what this means, but if anyone has an idea please share it!</p> <p>:::::INSERT SOLVED:::::</p> <p>Turns out the problem was caused by the <code>scraper</code> putting individual items in a list. So <code>{'actor': [u'this one guy']</code> as opposed top <code>{'actor': u'this one guy'}</code>.</p>
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